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ASP.NET Web Apps

ASP.NET web applications

ASP.NET is used to create dynamic web sites. Web pages are said to be dynamic when the content displayed on the web page change based on the user profile, user input, time or any other factor. The web pages that does not changes are said to be static. In an ASP.NET web application, web pages served by the web server are generated by an application based on the user request.

ASP.NET websites use client server technology like every other web sites. Where the browser is the client. When a user types a URL or clicks a link or a button in the web page, a request is sent to the web server. This request is then sent to application server that runs an appropriate program to create the web page requested by the user. This web page also may include data that is retrieved from a database server. Once the web page is created, this web page is sent to web server which sends it to the user's browser. The whole process is called a round trip.

Listed below are 5 different ways of developing ASP.NET application: 
  • Web forms
  • MVC 
  • Web Pages with Razor 
  • Dynamic Data Entities 
  • Reports web site
Visual Studio 2012 is an Integrated Development Environment that can be used for developing ASP.NET application. Visual Studio comes in four different flavors. Each of these flavors has different features and a price tag to match the features.  
  • Visual Studio 2012 Express
  • Visual Studio 2012 Professional 
  • Visual Studio 2012 Premium
  • Visual Studio 2012 Ultimate 
ASP.NET Application Example
An ASP.NET Web forms are made up of a number of Server controls and validation controls. Let's create a simple Web application, that has one text field, a lable and a button. When the user enters her name and press the button, the name is sent to the server and the server sends back page personal greeting message for the user. 

When the user press the button the round trip happens. This round trip might be prevented when javascripts created by validation controls identifies unaccepted values. In our example, the user may have pressed the button without entering her name. If the javascript is not enabled, then the data is not validated locally and needs to be validated in the server.


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